Date published: 2026-3-17

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PTRF Antibody (4a): sc-517589

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Datasheets
  • PTRF Antibody (4a) is a mouse monoclonal IgG1 κ PTRF antibody provided at 200 µg/ml
  • raised against amino acids 157-272 of PTRF of mouse origin
  • recommended for detection of PTRF of mouse, rat and human origin by WB, IP and IF
  • available conjugated to agarose (sc-517589 AC), 500 µg/ml, 25% agarose, for IP; and to HRP (sc-517589 HRP), 200 µg/ml, for WB, IHC(P) and ELISA
  • m-IgG Fc BP-HRP, m-IgG1 BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for PTRF Antibody (4a) for WB applications. These reagents are now offered in bundles with PTRF Antibody (4a) (see ordering information below).
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    PTRF Antibody (4a) is a mouse monoclonal IgG1 kappa light chain antibody that detects PTRF protein of mouse, rat, and human origin by western blotting (WB), immunoprecipitation (IP), and immunofluorescence (IF). Anti-PTRF antibody (4a) is available in both non-conjugated and various conjugated forms, including agarose and horseradish peroxidase (HRP). PTRF protein, also known as Polymerase I and transcript release factor or FKSG13, plays a crucial role in the termination of transcription by RNA polymerase I (Pol I). PTRF monoclonal antibody (4a) is essential for the dissociation of the transcription complex, which is a vital step in the synthesis of ribosomal RNA. This 390 amino acid protein binds to the 3′ end of pre-rRNA while interacting with Pol I and TTF-1 (Thyroid transcription factor-1), facilitating the release of the Pol I complex from the DNA template. Proper functioning of PTRF is critical for maintaining the efficiency of ribosome biogenesis, which is fundamental for cellular growth and proliferation. PTRF (4a) antibody is localized in various cellular compartments, including the cell membrane, microsome, nucleus, and cytoplasm, highlighting its versatile role in cellular processes. Three isoforms of PTRF are produced through alternative splicing, which may contribute to its functional diversity and regulatory mechanisms within different cellular contexts.

    For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

    Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

    LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

    PTRF Antibody (4a) References:

    1. PTRF (polymerase I and transcript-release factor) is tissue-specific and interacts with the BFCOL1 (binding factor of a type-I collagen promoter) zinc-finger transcription factor which binds to the two mouse type-I collagen gene promoters.  |  Hasegawa, T., et al. 2000. Biochem J. 347 Pt 1: 55-9. PMID: 10727401
    2. The transcript release factor PTRF augments ribosomal gene transcription by facilitating reinitiation of RNA polymerase I.  |  Jansa, P., et al. 2001. Nucleic Acids Res. 29: 423-9. PMID: 11139612
    3. Vectorial proteomics reveal targeting, phosphorylation and specific fragmentation of polymerase I and transcript release factor (PTRF) at the surface of caveolae in human adipocytes.  |  Aboulaich, N., et al. 2004. Biochem J. 383: 237-48. PMID: 15242332
    4. Identification of a major protein on the cytosolic face of caveolae.  |  Vinten, J., et al. 2005. Biochim Biophys Acta. 1717: 34-40. PMID: 16236245
    5. Association and insulin regulated translocation of hormone-sensitive lipase with PTRF.  |  Aboulaich, N., et al. 2006. Biochem Biophys Res Commun. 350: 657-61. PMID: 17026959
    6. PTRF triggers a cave in.  |  Chadda, R. and Mayor, S. 2008. Cell. 132: 23-4. PMID: 18191216
    7. PTRF-Cavin, a conserved cytoplasmic protein required for caveola formation and function.  |  Hill, MM., et al. 2008. Cell. 132: 113-24. PMID: 18191225
    8. Identification of a transcript release activity acting on ternary transcription complexes containing murine RNA polymerase I.  |  Mason, SW., et al. 1997. EMBO J. 16: 163-72. PMID: 9009277
    9. Cloning and functional characterization of PTRF, a novel protein which induces dissociation of paused ternary transcription complexes.  |  Jansa, P., et al. 1998. EMBO J. 17: 2855-64. PMID: 9582279

    Ordering Information

    Product NameCatalog #UNITPriceQtyFAVORITES

    PTRF Antibody (4a)

    sc-517589
    200 µg/ml
    $322.00

    PTRF Antibody (4a): m-IgG Fc BP-HRP Bundle

    sc-531582
    200 µg Ab; 10 µg BP
    $361.00

    PTRF Antibody (4a): m-IgGκ BP-HRP Bundle

    sc-525313
    200 µg Ab, 40 µg BP
    $361.00

    PTRF Antibody (4a): m-IgG1 BP-HRP Bundle

    sc-544639
    200 µg Ab; 20 µg BP
    $361.00

    PTRF Antibody (4a) AC

    sc-517589 AC
    500 µg/ml, 25% agarose
    $424.00

    PTRF Antibody (4a) HRP

    sc-517589 HRP
    200 µg/ml
    $322.00